Here you can find the demos (on OfficeDev/PnP project) about how to consume the Office 365 APIs. The slides and the recorded video will be available soon on the European SharePoint & Office 365 Community.
Moreover, as promised, here you can find the list of libraries (released and beta) available to consume Azure AD: https://msdn.microsoft.com/en-us/library/azure/dn151135.aspx.
I hope you enjoyed my webinar, and hope to meet you again shortly.
My next stop Sorriso will be in Helsinki, March 14th.